Trolley mechanism



A. W. HAM.

TROLLEY MECHANISM.

APPLICATION FILED MM. so. 1920.

A. W. HAM.

TROLLEY MECHANISM.

APPLICATION FILED MMI. so. 1920.

.N @WMI Zd ATTORNEY.

19 passing the ethrougln is a latch member 20, provided with a depending integral catch 21 and an integral lorward extension 21',

said catch being` adapted to engage with thev teeth 18, 18 and 18 termed on the forward upper surface of the bar 15, and pivotally secured to the rear portion of the reach arm 1 metano loop member constituting to is a what may be properly termed a lever 22, to which is'pivotally secured by a pin 23 pas ing therethrough, a latchQf-l adapted to gage with the teeth 25, 25" and 25 in the upper-surface of the bar 15, said lever 22, when in the positionshown, being held under the tension of the coiled springs 26, one end of each spring bein secured to a pin 27 car ried by the lever, and the other end being fastened to a plate 28 linedly secured to the reach armfl. Pivotally secured to each side ofthe metallic member 3 by a pin 29 pass- Ving therethrough is a bar 30, each of said bars extending rearwardly beyond the leverVV 22, and provided `with a reduced end portion 81 .which is adapted to rest upon and slidi ingly engage witha pin 32 passing through said lever '22 and secured thereto. VTo one side of the bar 15 is secured by suitable pins 33 passing through downwardly and rearwardly inclined slots 34, a slidable guard plate 35 terminating at its forward end portion with an upright extension 36.'

It will be seen that the device is shown at rest with the spring tension released, and the latch 2e. in engagement with the first tooth 25 attached to the sliding bar 15, The bars 30 are so 'constructed and connected with the trolley pole support 3 that the rear portion or each barV may freely slide backward 'and forward on the pin 32 carried by the lever 22. The base retaining springs 9 require an extension or eXJansion of anproximatel three and vone-halt inches to obtain the proper pressure of the trolley wheel against the feed wire at all times, and the operation for Vobtaining the required pressure is as follows By pulling down the trolley pole,the bars 30 will torce back the lever 22, and the latch V24C will pull the sliding bar 15 rearwardlyr until the catch 21 engages with the iirst'tooth 181 By letting the Vpole rise again, the latch 'will force the lever 22V and latch 24 forwardly thereby causing the outer front end of said latch to engage with the upright extension 36 formed on the guard plate 35 and torce the said plate upwardly and forwardly thus raising it at a sufficient height to prevent the latch 24 from engaging with any of the teeth when the bar 15 is released at its forward end by the trolley leaving the wire. a

lt will be readily perceived that when the trolley is caused for any reason to jump from or leave the trolley wire, the sector 3T will immediately move upwardly and lift the catch 21 from in front oi the bar 15, thus causing said bar to move forward and the Vpole to drop, which action will cause the latch 24: to be moved rearwardly and in its rearward movement will engage the upright 37 iiXedly secured to the guard plate and cause the said guard plate to assume the position shown below the teeth formed on the bar 15. Y l

From the foregoing description it is bee lieved that the construction and operation ol my novel device will be fully understood by or bar, and means for causing a step by step Arearward movement of the slidable toothed.

bar. Y Y

2, A device Vof the character described, comprising a base member, a trolley pole pivoted to said member provided with rocker arms at its lower end, a plurality of pole retaining springs'secured at'o'ne end` to the rocker arms, a movable rod connected to the other end of said springs, a reach arm xedly secured to the base member, a slidable toothed bar secured to the outer end of the movable rod, and means secured to said reach arm and pole for causing a stepV by step rearward movement of the slidable toothed bar yfor restoring the proper tension to said springs.`

3,A device of the character described, comprising a base member, Val trolley pole pivoted to said base member having rocker Varms at its lower end, pole retaining springs secured to said rocker arms, a reach arm iiXedly secured to the base member, a lever pivotally secured to the reach arm with a latch member pivoted thereto, a slidable toothed bar, and means pivotally secured to the trolley pole 'adapted to slidingly engage said lever and cause a step by step rearward movement of the slidable toothed bar.

il. A device of the character described, comprising a base member, a trolley pole pivoted to said base member having rocker arms at its lower end, pole retaining springs secured to the rocker arms, a reach arm secured to the base member, a slidable toothed bar positioned above the reach arm, means secured to the reach arm and pole whereby an up and down movement of the pole imparts a step by step rearward movement of said toothed bar, and means carried by the reach arm for locking the toothed bar in its rearward position.

A device of the character described, conprising a base member, a trolley pole pivoted to the base member, pole retaining springs secured at one end to the lowermost portion of the pole, a movable rod secured to the other end or' said springs, a slidable toothed bar secured to the outer end of the movable rod, a reach arm fixedly secured to the base member, and means pivotally secured to the base member and trolley pole to cause a slidable rearward step by step movement of the said toothed bar for restoring theV proper tension to said springs.

6. A device of the character described, comprising a base member, a trolley pole pivotally secured to said base member, pole retaining springs secured to the lower end of said pole, a reach arm iXedly secured to the base member, a lever pivoted to the reach arm, springs secured to the reach arm and to said lever, a latch member pivoted to the lever, a slidable toothed bar positioned vabove the reach arm, means pivotally secured to the said pole adapted to slidingly engage said lever and impart a step by step rearward movement to the toothed bar by the up and down movement of the pole, and means for locking said toothed bar in the rearward position.

7. A device of the character described, comprising a base member, a trolley pole pivotally secured to the base member, poleretaining springs secured to the pole at one end, and the other end to the springs connected to a movable ratchet bar actuated by the pole to restore the tension to the springs after said spring tension has been released.

'8. A device of the character described, comprising a base member, a trolley pole pivotally secured tothe base member,rpole retaining springs secured to the pole, a slidable toothed bar, a reach arm secured to the base member, a lever pivoted to the reach arm, springs secured to the reach arm and to said lever, a pivoted latch member carried by said lever, a pivoted catch member carried by the reach arm adapted to lock the toothed bar in its rearmost position, means pivotally secured to the pole adapted to slidably engage with the lever and cause a step by step rearward movement of the toothed bar by the up and down movement of the pole for restoring proper tension to the retaining springs, and means for unlocking the catch member by the swinging movement of the pole.

ALBERT W. HAM. 

